FWB800 Barrel ???

[AdminMASTER]

Yes is Vasco rifle I didn't shoot it yet I'm sure it can be fixed with a longer probe.

Vasco sent me some pictures. It looks pretty nice! He did say that dealing with Tau-Brno was not easy though.

Yes, that Czech Engineer chap, who happens to be General Manager (perhaps owner ?)

..he never replied to my emails after IWA 2014 when I followed up with requests (maybe he's never heard of Google Translator ).

He talks the "talk" ......Jon you would LUV this guy...after 5 minutes my head was spinning he got so technical like a Nuclear Physicist talking about atoms, neutrons, and dark matter .. total boffin...even looks the part

[SDplinker]

No reply from Top-Gun....the rifle for sale is the 10m model. I asked about the possibility of barrels, parts etc and it's been crickets ever since.

[Jon]

I would give them a wide birth Casey if they cant be bothered to answer a prospective sales call, whats the customer service like.

[mgkd]

I have one of these and it is a rather strange barrel: it is the first barrel I have found to shoot well .177 JSB 13.4 grain at 24J . It does not like Air Arms or JSB 10.3 .

[AdminMASTER]

I have one of these and it is a rather strange barrel: it is the first barrel I have found to shoot well .177 JSB 13.4 grain at 24J . It does not like Air Arms or JSB 10.3 .

Sounds about right...part of the conversation I havent revealed till now....the guy says - they ...MAKE ANY BARREL SPEC TO ANY SPECIFIC PELLET BRAND, AND SPECIFIC PELLET CHARACTERISTIC...and I mean the guy goes on to say Flat head versus domed pellets & weight as well ...

which I thought far fetched till now...



Ok , at IWA 2015 , Ive got to do some more arm twisting and get a load more details.

[mgkd]

I am getting somewhere with this barrel. Here is what I learned after a lot of testing:
-It needs cleaning every 30-50 shots at this point. The bore fouls up quickly.
-I "fire-lapped" the barrel by shooting pellets coated with JB non-embedding bore paste. This process improved groups significantly but the barrel still fouls up quickly. I will try different batches of 13.4 grain pellets to see what happens.
-This barrel works well with 4.5mm JSB 13.4grain pellets only.
-It shoots better with barrel weights(about 100 grams near the muzzle end).

5-shot 50-yard groups are averaging about 11mm center-to-center but more work is needed.

[AdminMASTER]

I am getting somewhere with this barrel. Here is what I learned after a lot of testing:
-It needs cleaning every 30-50 shots at this point. The bore fouls up quickly.
-I "fire-lapped" the barrel by shooting pellets coated with JB non-embedding bore paste. This process improved groups significantly but the barrel still fouls up quickly. I will try different batches of 13.4 grain pellets to see what happens.
-This barrel works well with 4.5mm JSB 13.4grain pellets only.
-It shoots better with barrel weights(about 100 grams near the muzzle end).

5-shot 50-yard groups are averaging about 11mm center-to-center but more work is needed.

Can you please post some pics whenever, or whatever aspects you want - barrel, bore paste coated pellet, groupings before & after etc..?

Thks for the update

[vfrod]

I have one of these and it is a rather strange barrel: it is the first barrel I have found to shoot well .177 JSB 13.4 grain at 24J . It does not like Air Arms or JSB 10.3 .

Sounds about right...part of the conversation I havent revealed till now....the guy says - they ...MAKE ANY BARREL SPEC TO ANY SPECIFIC PELLET BRAND, AND SPECIFIC PELLET CHARACTERISTIC...and I mean the guy goes on to say Flat head versus domed pellets & weight as well ...

which I thought far fetched till now...



Ok , at IWA 2015 , Ive got to do some more arm twisting and get a load more details.

Hello:

I believe, from experience, that Tau makes a pellet specific loading chamber, in my case specific to the CP/CPL pellets. To shoot with JSB express or exact, I have to seat the pellets 17mm deep from the barrel entrance!! Mgkd: something to try if you want to use different pellets, I'm very curious about the results...

Best regards,

Vasco

[mgkd]

Vasco,
You are quite correct about the long entry section of the barrel. In the process of converting this barrel to use on a Steyr I cut off this section. The new barrel entry was polished using very fine emery cloth, etc.

At some point I will post pics of targets, etc. from my process but they are rather difficult to follow as I did not have plans to use them as a show-and-tell.